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<a name="core.revision_history"></a><a class="link" href="revision_history.html" title="Revision History">Revision History</a>
</h2></div></div></div>
<div class="toc"><dl class="toc">
<dt><span class="section"><a href="revision_history.html#core.revision_history.changes_in_1_79_0">Changes in 1.79.0</a></span></dt>
<dt><span class="section"><a href="revision_history.html#core.revision_history.changes_in_1_78_0">Changes in 1.78.0</a></span></dt>
<dt><span class="section"><a href="revision_history.html#core.revision_history.changes_in_1_77_0">Changes in 1.77.0</a></span></dt>
<dt><span class="section"><a href="revision_history.html#core.revision_history.changes_in_1_76_0">Changes in 1.76.0</a></span></dt>
<dt><span class="section"><a href="revision_history.html#core.revision_history.changes_in_1_74_0">Changes in 1.74.0</a></span></dt>
<dt><span class="section"><a href="revision_history.html#core.revision_history.changes_in_1_71_0">Changes in 1.71.0</a></span></dt>
<dt><span class="section"><a href="revision_history.html#core.revision_history.changes_in_1_69_0">Changes in 1.69.0</a></span></dt>
<dt><span class="section"><a href="revision_history.html#core.revision_history.changes_in_1_67_0">Changes in 1.67.0</a></span></dt>
<dt><span class="section"><a href="revision_history.html#core.revision_history.changes_in_1_65_0">Changes in 1.65.0</a></span></dt>
</dl></div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="core.revision_history.changes_in_1_79_0"></a><a class="link" href="revision_history.html#core.revision_history.changes_in_1_79_0" title="Changes in 1.79.0">Changes in 1.79.0</a>
</h3></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
            Added <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">allocator_traits</span></code>, an implementation
            of <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">allocator_traits</span></code>.
          </li>
<li class="listitem">
            Made <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">pointer_traits</span></code> SFINAE friendly.
          </li>
<li class="listitem">
            <code class="computeroutput"><span class="identifier">boost</span><span class="special">/</span><span class="identifier">iterator</span><span class="special">.</span><span class="identifier">hpp</span></code> is deprecated and will be removed
            in a future release. The header defines <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">iterator</span></code>
            template, which is equivalent to <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">iterator</span></code>
            in <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">iterator</span><span class="special">&gt;</span></code> header. However, since <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">iterator</span></code> is itself deprecated in C++17,
            users are advised to remove <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">iterator</span></code>
            or <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">iterator</span></code> use from their code.
          </li>
<li class="listitem">
            Added <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">core</span><span class="special">::</span><span class="identifier">verbose_terminate_handler</span></code>, a utility
            function intended to be passed to <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">set_terminate</span></code>
            that prints information about the uncaught exception to <code class="computeroutput"><span class="identifier">stderr</span></code>.
          </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="core.revision_history.changes_in_1_78_0"></a><a class="link" href="revision_history.html#core.revision_history.changes_in_1_78_0" title="Changes in 1.78.0">Changes in 1.78.0</a>
</h3></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
            Added a generic implementation to <code class="computeroutput"><span class="identifier">boost</span><span class="special">/</span><span class="identifier">core</span><span class="special">/</span><span class="identifier">cmath</span><span class="special">.</span><span class="identifier">hpp</span></code>,
            enabled when <code class="computeroutput"><span class="identifier">BOOST_CORE_USE_GENERIC_CMATH</span></code>
            is defined or when the platform does not provide the necessary facilities
            in <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">cmath</span><span class="special">&gt;</span></code>.
          </li>
<li class="listitem">
            Added <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">core</span><span class="special">::</span><span class="identifier">type_name</span></code>, a utility function that
            returns the name of a type as a string.
          </li>
<li class="listitem">
            Added <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">span</span></code>, a C++11 implementation of C++20's
            <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">span</span></code>.
          </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="core.revision_history.changes_in_1_77_0"></a><a class="link" href="revision_history.html#core.revision_history.changes_in_1_77_0" title="Changes in 1.77.0">Changes in 1.77.0</a>
</h3></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
            <code class="computeroutput"><span class="identifier">boost</span><span class="special">/</span><span class="identifier">core</span><span class="special">/</span><span class="identifier">uncaught_exceptions</span><span class="special">.</span><span class="identifier">hpp</span></code> has been modified for compatibility
            with Mac OS 10.4 and older.
          </li></ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="core.revision_history.changes_in_1_76_0"></a><a class="link" href="revision_history.html#core.revision_history.changes_in_1_76_0" title="Changes in 1.76.0">Changes in 1.76.0</a>
</h3></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
            Added implicit conversion between compatible reference wrappers.
          </li>
<li class="listitem">
            Added <code class="computeroutput"><span class="identifier">boost</span><span class="special">/</span><span class="identifier">core</span><span class="special">/</span><span class="identifier">cmath</span><span class="special">.</span><span class="identifier">hpp</span></code>, a portable implementation of the
            floating point classification functions from <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">cmath</span><span class="special">&gt;</span></code>.
          </li>
<li class="listitem">
            Added <code class="computeroutput"><span class="identifier">boost</span><span class="special">/</span><span class="identifier">core</span><span class="special">/</span><span class="identifier">bit</span><span class="special">.</span><span class="identifier">hpp</span></code>, a portable implementation of the
            C++20 standard header <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">bit</span><span class="special">&gt;</span></code>.
          </li>
<li class="listitem">
            Fixed <code class="computeroutput"><span class="identifier">BOOST_TEST_EQ</span></code>,
            <code class="computeroutput"><span class="identifier">BOOST_TEST_NE</span></code> for character
            types under C++20.
          </li>
<li class="listitem">
            Revised allocator access utilities (now support VS2013, and no workarounds
            use <code class="computeroutput"><span class="identifier">allocator_traits</span></code>.)
          </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="core.revision_history.changes_in_1_74_0"></a><a class="link" href="revision_history.html#core.revision_history.changes_in_1_74_0" title="Changes in 1.74.0">Changes in 1.74.0</a>
</h3></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
            Implemented the allocator access utilities which provide a replacement
            for <code class="computeroutput"><span class="identifier">allocator_traits</span></code>
            with individual traits and functions for each facility. They support
            the C++11 allocator model when possible and provide a fallback for C++98
            compatibility.
          </li>
<li class="listitem">
            Added <code class="computeroutput"><span class="identifier">BOOST_TEST_WITH</span></code>
            to Lightweight Test.
          </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="core.revision_history.changes_in_1_71_0"></a><a class="link" href="revision_history.html#core.revision_history.changes_in_1_71_0" title="Changes in 1.71.0">Changes in 1.71.0</a>
</h3></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
            Added functions <code class="computeroutput"><span class="identifier">alloc_construct</span></code>,
            <code class="computeroutput"><span class="identifier">alloc_construct_n</span></code>, <code class="computeroutput"><span class="identifier">alloc_destroy</span></code>, and <code class="computeroutput"><span class="identifier">alloc_destroy_n</span></code>
            in <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">core</span><span class="special">/</span><span class="identifier">alloc_construct</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code> for allocator aware and exception
            safe construction and destruction of objects and arrays.
          </li>
<li class="listitem">
            Added constexpr functions <code class="computeroutput"><span class="identifier">first_scalar</span></code>
            in <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">core</span><span class="special">/</span><span class="identifier">first_scalar</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code> for obtaining a pointer to the first
            scalar element of an array. Given a pointer of type <code class="computeroutput"><span class="identifier">T</span><span class="special">*</span></code> they return a pointer of type <code class="computeroutput"><span class="identifier">remove_all_extents_t</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;*</span></code>.
          </li>
<li class="listitem">
            Added class template <code class="computeroutput"><span class="identifier">noinit_adaptor</span></code>
            in <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">core</span><span class="special">/</span><span class="identifier">noinit_adaptor</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code> which is an allocator adaptor that
            converts any allocator into one whose <code class="computeroutput"><span class="identifier">construct</span><span class="special">(</span><span class="identifier">ptr</span><span class="special">)</span></code> performs default initialization via
            placement <code class="computeroutput"><span class="keyword">new</span></code>, and whose
            <code class="computeroutput"><span class="identifier">destroy</span><span class="special">(</span><span class="identifier">ptr</span><span class="special">)</span></code>
            invokes the <code class="computeroutput"><span class="identifier">value_type</span></code>
            destructor directly.
          </li>
<li class="listitem">
            Added class template <code class="computeroutput"><span class="identifier">default_allocator</span></code>
            in <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">core</span><span class="special">/</span><span class="identifier">default_allocator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>, which can serve as a minimal default
            allocator that has interface similar to C++20 <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">allocator</span></code>,
            supports configurations with disabled exceptions and does not have <code class="computeroutput"><span class="identifier">std</span></code> as an associated namespace. The
            allocator uses <code class="computeroutput"><span class="keyword">operator</span> <span class="keyword">new</span></code> and <code class="computeroutput"><span class="keyword">operator</span>
            <span class="keyword">delete</span></code> for allocation.
          </li>
<li class="listitem">
            In <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">core</span><span class="special">/</span><span class="identifier">uncaught_exceptions</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code> header, added workarounds for better
            compatibility with QNX SDP 7.0 when libc++/libc++abi libraries are used.
          </li>
<li class="listitem">
            The <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">detail</span><span class="special">/</span><span class="identifier">sp_typeinfo</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code> header is now marked as deprecated
            and will be removed in a future release. <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">core</span><span class="special">/</span><span class="identifier">typeinfo</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
            should be used instead.
          </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="core.revision_history.changes_in_1_69_0"></a><a class="link" href="revision_history.html#core.revision_history.changes_in_1_69_0" title="Changes in 1.69.0">Changes in 1.69.0</a>
</h3></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
            Implemented <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">empty_value</span></code>, for library authors to
            conveniently leverage the Empty Base Optimization to store objects of
            potentially empty types.
          </li>
<li class="listitem">
            Implemented <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">quick_exit</span></code> to provide the C++11 standard
            library facility <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">quick_exit</span></code>
            functionality.
          </li>
<li class="listitem">
            Reduced the number of statics in Lightweight Test, and employ lighter
            abort behavior for MSVC compilers upon failure to call <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">report_errors</span></code>.
          </li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="core.revision_history.changes_in_1_67_0"></a><a class="link" href="revision_history.html#core.revision_history.changes_in_1_67_0" title="Changes in 1.67.0">Changes in 1.67.0</a>
</h3></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
            Updated <code class="computeroutput"><span class="identifier">to_address</span></code> and
            <code class="computeroutput"><span class="identifier">pointer_traits</span></code> to reflect
            the design adopted for C++20 in <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0653r2.html" target="_top">P0653R2</a>.
          </li></ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="core.revision_history.changes_in_1_65_0"></a><a class="link" href="revision_history.html#core.revision_history.changes_in_1_65_0" title="Changes in 1.65.0">Changes in 1.65.0</a>
</h3></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
            Implemented <code class="computeroutput"><span class="identifier">pointer_traits</span></code>
            for C++03 and higher, that implements <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0653r0.html" target="_top">P0653r0</a>.
          </li>
<li class="listitem">
            Added <code class="computeroutput"><span class="identifier">BOOST_TEST_GT</span></code> and
            <code class="computeroutput"><span class="identifier">BOOST_TEST_GE</span></code> to Lightweight
            Test.
          </li>
</ul></div>
</div>
</div>
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<td align="right"><div class="copyright-footer">Copyright © 2014 Peter Dimov<br>Copyright © 2014 Glen Fernandes<br>Copyright © 2014 Andrey Semashev<p>
        Distributed under the <a href="http://boost.org/LICENSE_1_0.txt" target="_top">Boost
        Software License, Version 1.0</a>.
      </p>
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